Machine Learning Scientist

What you'll do at

This position is in the data science team under the Advertising Technology organization. The mission of the Advertising Technology organization is to advance Walmart eCommerce by driving higher value for our customers and vendor partners. Walmart is investing in building a world class advertising platform and the Ads team is responsible for defining and optimizing advertising products that drive discovery, sales and profits. The team operates an end to end advertising platform that includes a scalable ad service that serves hundreds of millions of impressions each day, sophisticated ad matching algorithms, real-time reports, self-service interface for end to end program management etc.

We are a highly motivated group of Big Data Geeks, Data Scientists and Applications Engineers, working in small agile group to solve sophisticated and high impact problems. We are building smart data systems that ingest, analyze and model massive flow of data from online and offline user activity. We use cutting edge machine learning, data mining and optimization algorithms on top of Hadoop and Spark to solve challenges in ecommerce and ads.

Join us if you want to be spending your time on: - Gathering and analyzing data, identifying key prediction/classification problems, devising solutions and building prototypes;- Formulating machine learning/statistical/optimization approaches while paying attention to business metrics, designing features from the rich data available from many sources, training, evaluating, and deploying models;- Researching and implementing methodologies to measure the impact of the technologies;- Initiating and proposing unique and promising modeling projects, developing new and innovative algorithms and technologies, pursuing patents where appropriate;- Developing high-performance algorithms for precision targeting; testing and implementing these algorithms in scalable, product-ready code; Interacting with other teams to define interfaces and understanding and resolving dependencies;- Staying current on published data mining, machine learning and modeling techniques and competing technologies and sharing these findings with scientists and engineers in the organization;- Maintaining world-class academic credentials through publications, presentations, external collaborations and service to the research community.

Minimum Qualifications

Masters or equivalent degree in a computational science with 2+ years of post graduate work experience in Machine Learning/Statistics/Data Science, or PhD with 4+ yrs of relevant research/work experience;- Experience with traditional as well as modern machine learning/statistical techniques, including Regression, Classification, Regularization, Ensemble Methods, Deep Neural Network, and Hypothesis Testing;- Strong implementation experience with high-level languages, such as Python, R, Perl, Ruby, Scala or similar scripting languages; familiarity with Linux/Unix/Shell environments;- Strong hands-on skills in sourcing, cleaning, manipulating and analyzing large volumes of data;- Strong written and oral communication skills.

Preferred Qualifications

- Experience building and maintaining large scale data/machine learning pipelines in online advertising, recommender system, ecommerce or relevant areas;- Experience leading machine learning/data science projects;- Experience working with product, sales and other key stakeholders to drive business success.

About Walmart Labs

Imagine working in an environment where one experiment can catapult an entire industry toward a smarter future. That’s what we do at Walmart Labs. We’re a team of 5,000+ software engineers, data scientists, designers and product managers within Walmart, the world’s largest retailer, delivering innovations that improve how our customers shop and our enterprise operates.

Hello, Silicon Valley

You don’t have to choose between your career and your lifestyle in Silicon Valley. Here, you can have both.

Frequently asked questions

On average, how long does it take to fill out an application?

Can I change my application after submitting?

No, you cannot change your application after submitting, so please make sure that everything is finalized before you hit the submit button.

How do you protect my personal information?

Processing of information on paper is minimal, and Walmart processes application information using an applicant tracking system (ATS). Access to the data within the ATS is restricted to authorized personnel, and the system itself is held to high security standards by Walmart.

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